Hot water circulating unit



Aug. 30, 1932. H. M. OWEN 1,874,602

' HOT WATER CIRCULATING UNIT Filed Jan. '31, 1931 2 Sheets-Sheet 1 Invenior Aug. 30, 1932. H. M. OWEN 1,874,602

HOT WATER GIRCULATING-UNIT Filed Jan. 31, 1931 2 Sheets-Sheet 2 Inventor A flomey Patented Aug. 30, I932. V

UNITED STATES PATENT OFFICE HENRY, MORTON OWEN, or NORFOLK, VIRGINIA nor WA'IER- crrtounnrrno UNIT Application filed January 31, 1931. Serial No. 512,694.

This invention relates to a circulating unit cleanout cover is represented at 14 on the top. which is designed to be used in connection The boiler may be provided with or without with hot water heating systems of the type supporting legs la. The improved boiler employing boilers as the principal source of tube clrculatlng unit is generally designated heat, whether they be of the coal, wood, or by the numeral 16 and as before stated, the 55 oil heated type. primary or major part thereof is confined The invention, however, is primarily de within the compartment or firebox 11 and 1S signed for use and association with a boiler Spaced above the grate and submerged employing coal, including a grate, and ash within the burning coals (not shown) of the 19 compartment beneath the grate, and a firefire bed. to

box above the grate. The numeral 17 designates the front The purpose of the invention is to proheader having a circulating pipe connection vide a simple, and economical unit susceptible Ornipple at 18. Arranged in parallehsm to of expeditious installation and removal, and this and Spaced therefrom is a rear header, 19

constructed to permit the circulating tube to having at its bottom a similar pipe connecbe embedded directly in the bed of the fire. tion 20- The horizontal tubes are distin- More specifically stated, the invention inguished by the numeral 21 and are arranged volves the construction and provision of a in vertically spaced superposed relationship bodily applicable and removable unit includ-- with the grate in a pluralityof verticalrows 2% ing end headers and circulating tubes thereas'shown in Figure 3 to provide space to acre between, wherein said headers are constructed commodate the fuel therebetween and obtain to fit in a practical way in the firebox and ash the greatest extent of. heating contact byv the receptacle to provide for a uniform distrifuel. bution of strain and stress, and to afford an It will be observed that a portion of the 25 appropriate circulation of the water. header 19 extends below the lower-most tube In the drawings: and depends into the ash pit 12 and rests on Figure 1 is a side elevational view of a the bottom of the boiler. This is for support boiler embodying the invention. and'distribution of strain and stress. The

Figure 2 is a vertical sectional view therebottom of the front header 17 rests on a ledge 86 through with the circulating unit in elevation. or supportlngbracket 22 and termlnates on a so Figure 3 is a horizontal sectional view. plane substantially even with the grate 10. F igure 4 is a vertlcal sectional view The numeral 22 merely designates the through the unit per se. shaker lever and'23 the retaining segment or As shown in Figure 2 for example, the fixture therefor. Thegrate and operating 35 boiler is generally designated by the numeral construction however constitutes no part of 5 and is of appropriate or suitable constructhe novelty of the invention, except in comtion. If desired, it may include a single wall bination with the circulating unit. and internal lining sheets 6 as shown in Fig- As before stated, the gist of the invention ure 3. is in providing a circulatory device 16 charac-,

At the back and near the top is a smoke terized by front and rear spaced parallel outlet or chimney connection 7. At the front hollow headers joining together the vertical is a hopper 8 having a suitable hinged closure rows of tubes 21 in proper spaced relation 9 to facilitate insertion of fuel. The numerabove the grate 10 and providing that the als 10 designate the oscillatory or rotary lower portion of the header .19 rests on the 45 grates which are mounted in ensemble formafloor or bottom of the boiler casing and tion. These are disposed at a point within further providing that the front header 17 be the interior of the boiler to define the upper supported on the bracket 24, so as to be 130- combustion chamber 11 and the lower ash sitioned outwardly of the adjacent rotatable receptacle 12. grate element and between this element and The ash door is indicated at 13. The the front wall of the boiler casing.

The feature of the invention is this: the I rows of tubes 21 are in vertically superposed and spaced relationship with respect to each other, the individual rowsbeing laterally spaced from each other so that there is provided receptacles or pockets between the 7 rows to receive portions of the fuel deposited on the grate and to provide that the tubes themselves will be submerged in the burning fuel when it is ignited, so as to obtain the ful benefit of heat thereof by direct contact with the fire. v

In carrying the invention into practice, I have evolved and produced a simplejand economical arrangement which issusceptible of easy application and removal and which, it is believed, fulfills the requirements of a device of this class in a highly satisfactory manner, promotes free circulation, and more efiicient and constant heating of the circulat ing water. v r d It may be observed that the upper end portionof the header 17 is extended slightly above the uppermost tube 21, whereas the corresponding end portion of the rear header 19 terminates inaplane substantially even with said tube. This is to promote free circulation of fluid. I

It is thought that the description taken in @connectionwith the drawings will enable a clear understanding ofthe invention to be had. Therefore, a more lengthy description is thought unnecessary.

, rest its lower end upon the bottom of the ash receptacle, a plurality of vertically spaced Water circulating tubes connected with said headers in vertically superposed spaced re- 0 lationship, so as to provide fuel spaces therebetween, and means in the casing above thefront headerfor introducing fuel into the fire box and about said circulating tubes,

] In testimony whereof I aflix my signature. 35

HENRY MORTON OWEN.

While the preferred embodiment of the in i vention has been shown and described, it is to be understood that minor changes coming within the field of invention claimed may be resorted to if desired. 'Iclaim: i I. I

1. In astructure of theclass described, in

combination, a boiler comprising a casing,

fire grates supported in said casing and defining an underlying ash pit, and an overlying fuel compartment or firebox, a water circulating unit comprising'front and rear vertical headers, and horizontal vertically spaced circulating tubes in communication with said headers, the lower portion of the rear header I i projecting down into said ash pit and resting on the bottom of the casing and provided with a pipe connection, the front header being supported so as to have its lower end sub-- ,stantially on a level with said grate and provided at its top with a ipe connection, and i means for introducing uel into said casing arranged at a point above the front headerv 2. A structure of the class described, comprising a boiler, comprising a'hollow casing, a plurality of rockably mounted grates in the casing,operating means for the grates, the grates being arranged in the casing so as to define a fire box and an ash receptacle thereunder, means permitting access to the said ashreceptacle, a smoke-stack connection on the casing communicating with the fire box; a 

